226988639 has 2 divisors, whose sum is σ = 226988640. Its totient is φ = 226988638.

The previous prime is 226988617. The next prime is 226988653. The reversal of 226988639 is 936889622.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 226988639 - 2²⁴ = 210211423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226988659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113494319 + 113494320.

It is an arithmetic number, because the mean of its divisors is an integer number (113494320).

Almost surely, 2^226988639 is an apocalyptic number.

226988639 is a deficient number, since it is larger than the sum of its proper divisors (1).

226988639 is an equidigital number, since it uses as much as digits as its factorization.

226988639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 53.

The square root of 226988639 is about 15066.1421405747. The cubic root of 226988639 is about 610.0068430658.

The spelling of 226988639 in words is "two hundred twenty-six million, nine hundred eighty-eight thousand, six hundred thirty-nine".